Contrivance for the fastening of flying scaffolding to iron joists.



No. 827.268. PATENTED JULY 31; 1906.

v l y W. STIEPER. v QONTRIVANOE FOR THE FASTENING OF FLYING SGAFFOLDING TO IRON JOISTSL" APPLIGATION FILED we. 26, 1904.

WITNESSES:

//VVE/VTZ7H:

This NORRIS PETERS pa, WASHINGTON, n. c.

UNITED STATES WILHELM STIEPER,

PATENT OFFICE.

OF KIEL, GERMANY.

CONTRIVANCE FOR THE FASTENING OF FLYING SCAFFOLDING TO RUN JOISTS.

Specification of Letters Patent.

Patented July 31, 1906.

T atZZ whom it may concern:

Be it known that I, WILHELM STIEPER,

architect, a subject of the German Emperor,

. concrete ceilings and arches and Which causes a saving of time and material.

On the accompanying drawings, Figures 1, 3, and 5 represent the side view, Figs. 2 and 4 the front view, and Fig. 6 a pictorial view, of

- the scaffold-support.

The scafiold-support consists of an iron support a withtwo hooks b b,'which are each provided with a revolving catch 0. The iron support 0!. serves to receive the scafioldboards and is held by the two hooks b I), hanging on the lower flange of the joist. The revolving catch 0, Figs. 2 and 3, is so arranged at g and so fastened to the hook I) by a rivet d with washer e that it automatically presses the iron support a in the slot of the hook 6 like a wedge by the weight of the long lever and prevents its dropping even in the severest shaking. The notch f in the catch 0, on the other hand, by raisin the long lever of the catch to the horizonta Figs. 4 and 5, causes a droppin of the iron support in'theslot of the hook andtherewith a loosening of the scafiold-boards. For covering arches bent iron supports are used. instead of the straight.

If the scaffold is to be prepared for concrete ceilings or arches, the supports must be placed on the lower flanges of the joists, Fig. 1, at intervals of about 0.90 meter, and then the severaldivisions between the iron joists must be covered with scaflt'old-boards, which are to serve as a carrier for the ceiling which is being prepared. On striking the scaflold the revolving catches c are turned upward, so that the iron supports sink with the scafioldboards as far as the slots in the hooks I) allow. Thereupon the iron supports are drawn out of the hooks, so that the scafltold-boards and hooks can be taken away easily.

- Having thus described my invention, I declare that What I claim is A support for centering, comprising, .in combination, slotted hangers engaging the girders, a bar passing through the slots of the hangers, and a notched lever having a r unded end pivoted to each hanger below the slot horizontal position the bar lies in their notches, while when the levers are depressed their ends lift the bar inthe slots of the hangers, substantially as described.

In witness whereof I have hereunto signed my name, this 22d day of July, 1904, in the presence of two subscribing witnesses.

WILHELM STIEPER. Witnesses:

JULIUS RoPKE,

OTTo LAU.

in the latter, whereby when the levers are in 

